Search Results
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Aug-29
Regarding Beckman's business travels to meet with two potential acidimeter distributors, Central Scientific Co. and Sargent Co.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Aug-29
Regarding Beckman's business travels to meet with a potential acidimeter distributor, A. S. Aloe Co., and Drs. Ball and Rodewald at the Washington University in St. Louis.
Dr. Arnold O. Beckman (1900-2004) invented the…
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3 items
Letter from I. H. Lyons to Arnold O. Beckman
- 1935-Jun-23
This letter includes discussion of personnel issues and policies. Lyons expresses approval for the "Beckman Acidimeter" name.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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3 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Jun-23
In this letter, Beckman discusses acidimeter production, personnel issues, patent applications, and the naming of the instrument.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Jun-03
Though unsigned, context indicates that this letter was written by Beckman.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career…
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2 items
Letter from I. H. Lyons to Arnold O. Beckman
- 1935-May-31
Lyons gives Beckman advice about personnel decisions and discusses early sales of the "acidimeter."
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began…
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2 items
Contract between Howard Cary and Arnold O. Beckman
- 1935-May-31
The contract outlines details (including salary, confidentiality, and intellectual property rights) of Howard Cary's work for Arnold Beckman.
Howard Cary (1908-1991) was a Caltech-educated engineer who joined National…
- Creator Of Work Cary, H. Howard (Henry Howard), 1908-1991
- Subject Labor contract, Beckman Instruments, Inc.
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Portrait of Thomas Midgley, Jr. (1889-1944)
- 1930s – circa
Portrait of Thomas Midgley, Jr. (1889-1944), an American engineer and chemist who discovered the effectiveness of tetraethyl lead as an antiknock additive for gasoline.
Thomas Midgley, Jr. was born on May 18, 1889 in…
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Portrait of George O. Curme, Jr. (1888-1976)
- 1930s – circa
Portrait of George O. Curme, Jr. (1888-1976), popularly known as the father of ethylene and for his pioneering work on applications for by-products of petroleum processing.
Born in Mount Vernon, Iowa on December 24,…
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Early glass cell for polyamide preparation
- 1935-Apr-12
General view of a glass cell used for the preparation of polyamides during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. Predating the autoclave developed…
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First gas pressure spinner and windup
- 1935-Mar-29
General view of the first gas pressure spinner and windup used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. The spinning machine consists of a…
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Improved gas pressure spinner and windup
- 1935-Jul-03
General view of an improved gas pressure spinner and windup used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. In this iteration, a spinning machine…
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Joseph Labovsky at DuPont Experimental Station
- 1935
General view of Joseph X. Labovsky seated at a work bench in the "66" laboratory at the DuPont Experimental Station located in Wilmington, Delaware. Labovsky's colleague, Micky McGuire, is visible on the left-hand side…
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2 items
Chemcraft Chemical Outfit No. 5
- Circa 1935
Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until the late…
- Manufacturer Porter Chemical Company
- Subject Chemistry sets, Porter Chemical Company
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Constant Humidity Room at the Fertilizer Machinery Laboratory
- Circa 1935
General view of assorted equipment and apparatus in the Constant Humidity Room at the the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn…
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Employee at work in raw material storage at Fixed Nitrogen Research Laboratory plant
- 1930s
General view of an unidentified worker sorting raw material, possibly ore or phosphate, at a Fixed Nitrogen Research Laboratory plant. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American…
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Apparatus at Fixed Nitrogen Research Laboratory
- 1930s
General view of an unidentified apparatus, possibly a pump or compressor, used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research…
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Fertilizer testing apparatus mounting frame and driving mechanisms
- 1935
Close-up view of the mounting frame and driving mechanisms of the fertilizer distribution testing apparatus used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington…
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Constant Humidity Room at the Fertilizer Machinery Laboratory
- Circa 1935
General view of assorted equipment and apparatus in the Constant Humidity Room at the the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn…
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Indoor soil track at Fertilizer Machinery Laboratory
- 1935
General view of the indoor soil track used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. Measuring 9 feet wide by 70…
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Air-conditioning equipment at Fertilizer Machinery Laboratory
- 1935
General view of the air-conditioning equipment used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. This particular…
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Fertilizer distribution testing apparatus
- 1935
General view of the fertilizer distribution testing apparatus used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. The…
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Machine shop at the Fertilizer Machinery Laboratory
- 1935
General view of the machine shop at the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. Established by an act of Congress in…
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Fertilizer Machinery Laboratory
- 1935-Nov
Exterior view of the Fertilizer Machinery Laboratory at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. Established by an act of Congress in April 1900, Arlington Farm served as the main field…
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Gilbert Tele-Set Telegraph Outfit No. 3502
- Circa 1935
- Manufacturer A.C. Gilbert Company
- Subject Telegraph, A.C. Gilbert Company